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Finding the Fourth Proportional to 161,967.12, 223,519.04 and 90,361.12

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Solution

The fourth proportional to 161,967.12, 223,519.04 and 90,361.12 is: 124,700.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,967.12 : 223,519.04 = 90,361.12 : x
  2. Step 2: Convert to fraction form
    161,967.12/223,519.04 = 90,361.12/x
  3. Step 3: Cross multiply
    161,967.12x = 223,519.04 × 90,361.12
  4. Step 4: Simplify right side
    161,967.12x = 20,197,430,795.72
  5. Step 5: Solve for x
    x = 20,197,430,795.72/161,967.12
  6. Step 6: Final answer
    x = 124,700.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.